环境：
Windows 10专业版
graphviz版本： dot - graphviz version 2.38.0（20140413.2041）
Python 3.6.2
错误输出：
PS E:\VSCode_workpalce> pip install pygraphviz
Collecting pygraphviz
Using cached pygraphviz-1.3.1.zip
Installing collected packages: pygraphviz
Running setup.py install for pygraphviz ... error
Complete output from command e:\python\python36\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Maxwell\\AppData\\Local\\Temp\\pip-build-5yrqs95d\\pygraphviz\\setup
.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\Maxwell\AppData\Local\Temp\
pip-5b8cfh0_-record\install-record.txt --single-version-externally-managed --compile:
running install
include_dirs=None
library_dirs=None
running build
running build_py
creating build
creating build\lib.win-amd64-3.6
creating build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\agraph.py -> build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\graphviz.py -> build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\release.py -> build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\version.py -> build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\__init__.py -> build\lib.win-amd64-3.6\pygraphviz
creating build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_attributes.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_attribute_defaults.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_clear.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_drawing.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_edge_attributes.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_graph.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_html.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_layout.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_node_attributes.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_readwrite.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_string.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_subgraph.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\test_unicode.py -> build\lib.win-amd64-3.6\pygraphviz\tests
copying pygraphviz\tests\__init__.py -> build\lib.win-amd64-3.6\pygraphviz\tests
running egg_info
writing pygraphviz.egg-info\PKG-INFO
writing dependency_links to pygraphviz.egg-info\dependency_links.txt
writing top-level names to pygraphviz.egg-info\top_level.txt
reading manifest file 'pygraphviz.egg-info\SOURCES.txt'
reading manifest template 'MANIFEST.in'
warning: no previously-included files matching '*~' found anywhere in distribution
warning: no previously-included files matching '*.pyc' found anywhere in distribution
warning: no previously-included files matching '.svn' found anywhere in distribution
no previously-included directories found matching 'doc\build'
writing manifest file 'pygraphviz.egg-info\SOURCES.txt'
copying pygraphviz\graphviz.i -> build\lib.win-amd64-3.6\pygraphviz
copying pygraphviz\graphviz_wrap.c -> build\lib.win-amd64-3.6\pygraphviz
running build_ext
building 'pygraphviz._graphviz' extension
creating build\temp.win-amd64-3.6
creating build\temp.win-amd64-3.6\Release
creating build\temp.win-amd64-3.6\Release\pygraphviz
cl.exe /c /nologo /Ox /W3 /GL /DNDEBUG /MD -INone -Ie:\python\python36\include -Ie:\python\python36\include /Tcpygraphviz/graphviz_wrap.c /Fobuild\temp.win-amd64-3.6\Release\pygraphvi
z/graphviz_wrap.obj
error: command 'cl.exe' failed: No such file or directory
----------------------------------------
Command "e:\python\python36\python.exe -u -c "import setuptools, tokenize;__file__='C:\\Users\\Maxwell\\AppData\\Local\\Temp\\pip-build-5yrqs95d\\pygraphviz\\setup.py';f=getattr(tokenize,
'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" install --record C:\Users\Maxwell\AppData\Local\Temp\pip-5b8cfh0_-record\inst
all-record.txt --single-version-externally-managed --compile" failed with error code 1 in C:\Users\Maxwell\AppData\Local\Temp\pip-build-5yrqs95d\pygraphviz\
我在VS2017中安装了Python的VC编译器，可以手动找到cl.exe，但安装仍然失败。此外，我试图通过-c mingw32构建和安装它，它会产生更多的错误 如果有人有任何建议会很感激。